Merge pull request #30128 from ZTE-PaaS/zhangke-patch-021

Automatic merge from submit-queue get workers length shoud use RLock get workers length shoud use RLock properly  --- This change is [<img src="https://reviewable.kubernetes.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.kubernetes.io/reviews/kubernetes/kubernetes/30128)

Merge pull request #30128 from ZTE-PaaS/zhangke-patch-021
9620f066 · Kubernetes Submit Queue · GitHub · 91a39303 · 1c135406 · 9620f066
Commit 9620f066 authored Aug 11, 2016 by Kubernetes Submit Queue Committed by GitHub Aug 11, 2016
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prober_manager.go pkg/kubelet/prober/prober_manager.go +2 -2

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--- a/pkg/kubelet/prober/prober_manager.go
+++ b/pkg/kubelet/prober/prober_manager.go
@@ -234,8 +234,8 @@ func (m *manager) removeWorker(podUID types.UID, containerName string, probeType
 // workerCount returns the total number of probe workers. For testing.
 func (m *manager) workerCount() int {
-	m.workerLock.Lock()
+	m.workerLock.RLock()
-	defer m.workerLock.Unlock()
+	defer m.workerLock.RUnlock()
 	return len(m.workers)
 }